Public advocacy groups aren’t all that thrilled with AT&T’s justifications for limiting FaceTime access over 3G and 4G to those who spring for its costlier Mobile Share plans. Free Press, Public Expertise and the Open Innovation Institute have served official notice to AT&T that they prepare to file a net neutrality issue with the FCC within 10 days. It’s not challenging to comprehend why, offered the groups’ existing pro-neutrality stances: the Free Press’ policy lead Matt Wood argues that the carrier is unfairly pushing iOS users into plans they do not need, a particularly sore point for iPad-only clients that have no AT&T phones to share. We have actually reached out to AT&T for remark, although we’re not anticipating a change from its position that enabling application usage over WiFi makes its rules fine. As for the FCC? It’s mum on the existing situation. A literal reading of its net neutrality rules, nevertheless, doesn’t consist of a WiFi exemption and could not favor AT&T when Skype video is allowed and Verizon has no issues with unrestricted access.